A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Discovered in a peat bog, these horned helms come from a thousand years before the Viking Age.

One of Scandinavia's largest mosaics pays tribute to Danish art and science luminaries.

Nordic giants resurrected from the sea and restored to their former greatness.

Iron Age "bog person" preserved for over 2,300 years.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

According to legend, this is the burial place of a mythical three-legged death omen horse.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

Preserved "bog person" that is over 2,000 years old.

A public display of random paleontology.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

This giant wire frame man sculpture is crouched in contemplation.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

People have been placing babies on these lilies for photoshoots since the Victorian era.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

A doctor had this large tub carved into rocks to facilitate easier seawater bathing.

This unassuming Victorian cemetery is the final resting place of author Lewis Carroll.

This quaint mortuary chapel hides a stunning Celtic Revival and Art Nouveau interior.

The little-known second castle that William the Conqueror built in York.

A Reformation-era fiery figurehead once denoted this location as a print shop.